Feeding-off device for sewing-machines.



A. DIRMANDL FEEDING-OPP DEVICE FOR SEWING MACHINES.

APPLICATION FILED DEO.17, 1909.

Patented Feb. 28, 1911.

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FEEDING-OFF DEVICE FOR SEWING-MACHINES.

Specification of Letters Patent.

Application filed December 17, 1909.

Patented Feb. 28, 1911. Serial No. 533,570.

To all whom it may concern:

Be it known that I, ANTHONY DIRMANN, a citizen of the United States,residing at New York, in the county of \Vestchester and State of NewYork, have invented certain new and useful Improvements in Feeding- OffDevices for Sewing-Machines, of which the following is a specification,reference being had therein to the accompanying drawing.

My invention relates especially to devices for use in connection withsewing machines, and has for its object the provision of means andmechanism for receiving and feeding off any continuous strip or body asit passes from beneath the needle, after stitching.

To attain the desired end, my invention consists in certain novel anduseful combinations or arrangements of parts, and peculiarities ofconstruction and operation, all of which will be hereinafter first fullydescribed and then pointed out in the claim.

In the drawing, Figure 1 is a side elevation of a sewing machine andtable, wherewith my device is employed. Fig. 2 is a front elevation ofmy feeding off device. Fig. 3 is a vertical sectional view at line a-aof Fig. 2. Fig 4: is a horizontal, sectional view at line bb of Fig. 3.Fig. 5 is a detail of a modification of the gripping rollers shown inFigs. 2 and 45.

Similar numerals of reference, wherever they occur, indicatecorresponding parts in all the figures.

l is a sewing machine table, and 2 is a sewing machine mounted thereon.

3, 8 are standards provided with perforations 4 into which set screws 5enter.

6 is the main frame of my device provided with supporting rods 7arranged to enter the perforations 4 for the purpose of providingvertical adjustment for the main frame 6.

S and 9 are upwardly extending arms carried by the main frame 6.

10 is a rotatable shaft journaled in the arms 8 and 9., This shaft isprovided near one extremity with a driving wheel 11, grooved for thereception of a belt 12 which may be driven from the sewing machine, orany other suitable source of power.

13 is a spring which, while providing tension enough to drive thedevice, will permit the wheel 11 to slip, if the condition of the workbeing performed requires such movement. or the goods being fed-oif areretarded in movement.

1% is a gear wheel on the shaft 10, and 15 is a gripping roller uponsaid shaft.

The arm 9 has a slot 16 therein for the reception of a verticallymovable bearing block 17.

18 is a cross-piece mounted in the slot above the hearing block 17, and19 is a tension spring located between the block 17 and cross-piece 18.

20 is a cap over the slot 16, and 21 is a wing screw passing through thecap and engaging the cross-piece l8.

and 23 are studs which retain the spring 19 in place. By this means thepressure exerted upon the block 17 may be accurately regulated inaccordance with the work being done.

24 is a shaft journaled in the arm 8 and in the block 17.

25 is a gear upon said shaft which meshes with the gear 1 1.

26 is a gripping roller upon the shaft 24;, arranged to contact with thegripping roller 15. This roller may be grooved, as in Figs. 2 and at, inorder to accommodate a cord, or the like being sewed to a strip ofmaterial, or plain, for plain work, as required, without departing fromthe spirit of my invention.

27 is an arm by which the shaft 2a may be raised, throwing the roller 26out of contact =with the roller 15 when work is to be inserted betweenthe rollers.

When constructed and arranged in accordance with the foregoingdescription, my feeding-off device, while simple, will be found veryeffective in operation. By its use a proper removal of completed work isinsured, saving much time and labor, greatly increasing the capacity ofthe machine wherewith it is employed.

Having now fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

The combination with a sewing machine ofa feeding-off device in which iscomprised a main frame, a shaft rotatably mounted therein, a gear uponsaid shaft, means for driving said shaft at a variable tensioncomprising a loose driving Wheel 11 and spring 13 bearing thereon, agripping roller carried by said shaft, a second shaft lating thepressure exerted between the griprotatably mounted in the main frame inping rollers. 10 proximity to said first mentioned shaft, one Intestimony whereof I hereto aflix my of the bearings of said shaft beingmovable, signature in presence of two Witnesses.

a gripping roller upon said shaft and a gear ANTHONY DIRMANN. whichineshes with the gear upon the first Htnesses:

mentioned roller-shaft, means for raising F. A. CHIGKERING, and loweringsaid shaft, and means for regu- A. M. PIERCE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

